Buscar
Mostrando ítems 1-10 de 562
System-level assessment of reliability and resilience provision from microgrids
(Elsevier Ltd, 2018)
Microgrids are emerging to coordinate distributed energy resources and locally increase reliability to expected
events and resilience to extreme events. Furthermore, by deploying their inherent flexibility, grid-connect ...
Modelagem e simulação de uma microgrid
(Universidade Tecnológica Federal do ParanáToledoBrasilEngenharia EletrônicaUTFPR, 2019-11-29)
This final project work analyses the behaviour of a proposed microgrid during the period of 24 hours, thorugh a series of simulations using the software PowerWorld. The microgrid architecture allows the evaluation of the ...
Optimal Multiobjective Control of Low-Voltage AC Microgrids: Power Flow Regulation and Compensation of Reactive Power and Unbalance
(Ieee-inst Electrical Electronics Engineers Inc, 2020-03-01)
The presence of single-phase distributed generators unevenly injecting active power in three-phase microgrids may create undesired upstream current unbalance. Consequently, voltage asymmetry and even active power curtailment ...
Intelligent Expert System for Power Quality Improvement Under Distorted and Unbalanced Conditions in Three-Phase AC Microgrids
(Ieee-inst Electrical Electronics Engineers Inc, 2018-11-01)
This paper presents an expert system (ES) based on decoupled power/current decomposition and the k-nearest neighbor pattern recognition method to identify and choose the correct mitigation solution for power quality ...
Photovoltaic micro-grid for GD with active and reactive power injection control for connected and islanded operation
(2018-06-25)
This paper presents the implementation of a micro-grid with photovoltaic generation and local accumulation based on lead-acid batteries, considering its capability to operate connected or islanded from the utility grid. ...
Non-Strategic capacity withholding from distributed energy storage within microgrids providing energy and reserve services
(MDPI, 2020)
Microgrids have the potential to provide security and flexibility to power systems through the integration of a wide range of resources, including distributed energy storage, usually in the form of batteries. An aggregation ...
Development of a microgrid protection laboratory experiment for the study of overcurrent and undervoltage functions
(IEEE, 2017)
Today, power systems face new challenges in different fields, such as economic, social, environmental and technical. In the technical field, a number of issues related to protection ...
Robust Energy Management System for a Microgrid Based on a Fuzzy Prediction Interval Model
(IEEE-Inst Electrical Electronics Engineers, 2016)
Microgrids have emerged as an alternative to alleviate increasing energy demands. However, because microgrids are primarily based on nonconventional energy sources (NCES), there is high uncertainty involved in their ...
Controle de microrrede baseado em frequência
(Universidade Tecnológica Federal do ParanáCuritibaBrasilCurso de Engenharia ElétricaUTFPR, 2018-06-29)
This paper proposes the concept of a new generation for emergency power systems, which are usually composed of a diesel generator coupled to a truck, used in the power distribution network to provide electricity to a ...
Neural-network-based approach applied to harmonic component estimation in microgrids
(2021-01-01)
Power quality in smart microgrids must be carefully analyzed, whereas adverse consequences may harm the electrical systems without power management and appropriate measures. The main goal of this paper is to develop a 5th, ...